Gas-generating agent composition comprising triazine derivative

Abstract

A gas generating composition for an air bag having a low toxicity, a high burning rate and a low combustion temperature is provided. It is a gas generating composition comprising (a) a triazine derivative, (b) a basic metal nitrate, and (c) a binder or (c) a binder and (d) an additive.

1 . A gas generating composition comprising (a) a triazine compound and (b) an oxidant.  
     
     
         2 . The composition as claimed in  claim 1 , in which (b) the oxidant is an oxygen-containing oxidant.  
     
     
         3 . The composition as claimed in  claim 1  or  2 , in which (b) the oxidant is at least one selected from the group consisting of an oxyacid-salt, a metal oxide, a metal double oxide, a metal peracid and a basic metal nitrate.  
     
     
         4 . The composition as claimed in  claim 3 , in which the basic metal nitrate is at least one selected from the group consisting of a basic copper nitrate, a basic cobalt nitrate, a basic zinc nitrate, a basic manganese nitrate, a basic iron nitrate, a basic molybdenum nitrate, a basic bismuth nitrate and a basic cerium nitrate.  
     
     
         5 . The composition as claimed in any one of  claims 1  to  4 , in which (a) the triazine compound is at least one selected from the group consisting of a triazine compound, a melamine compound, trihydrazinotriazine, trimethylolmelamine, an alkylated methylolmelamine, ammelin, ammelide, ammelande, cyanuric acid, a cyanuric acid compound, melame, melem, melamine nitrate, perchloroacid salt of melamine and nitro melamine.  
     
     
         6 . The composition as claimed in any one of  claims 1  to  5 , which comprises 5 to 60 wt. % of component (a) and 40-95 wt. % of component (b).  
     
     
         7 . The composition as claimed in any one of  claims 1  to  6 , which further comprises (c) a binder and/or (d) an additive.  
     
     
         8 . The composition as claimed in  claim 7 , in which (c) the binder is at least one selected from the group consisting of carboxymethylcellulose, sodium carboxymethylcellulose, potassium carboxymethylcellulose, ammonium carboxymethylcellulose, cellulose acetate, cellulose acetatebutylate, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, ethylhydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethylethyl cellulose, fine crystalline cellulose, polyarylic amide, amine products of polyacrylic amide, polyacrylic hydrazid, a copolymer of an acrylic amide and a metal salt of acrylic acid, a copolymer of polyacrylic amide and polyacrylic ester, polyvinyl alcohol, acrylic rubber, guar gum, starch and silicone.  
     
     
         9 . The composition as claimed in  claim 7 , in which (d) the additive is at least one selected from the group consisting of metal oxides selected from the group consisting of copper oxide, iron oxide, zinc oxide, cobalt oxide, mangnese oxide, molybdenum oxide, nickel oxide, bismuth oxide, silica and alumina; metal hydroxides selected from the group consisting of aluminum hydroxide, cobalt hydroxide and iron hydroxide; metal carbonates or basic metal carbonates selected from the group consisting of cobalt carbonate, calcium carbonate, a basic zinc carbonate and a basic copper carbonate; composite compounds of metal oxides and metal hydroxides selected from the group consisting of Japanese acid clay, kaolin, talc, bentonite, diatomaceous earth and hydrotalcite, metal acid salts selected from the group consisting of sodium silicate, mica, molybdate, cobalt molybdate and ammonium molybdate, silicones, molybdenum disulfide, calcium stearate, silicon nitrite and silicon carbide.  
     
     
         10 . The composition as claimed in any one of claims  7 ,  8  and  9 , which comprises 0.1 to 15 wt. % of component (c) and 0.1 to 20 wt. % of component (d).  
     
     
         11 . The composition as claimed in any one of  claims 1  to  10 , in which component (a) is melamine or trihydrozinotriazine and component (b) is a basic copper nitrate.  
     
     
         12 . The composition as claimed in  claim 11 , which comprises 15 to 45 wt. % of (a) melamine or trihydrozinotriazine and 55 to 85 wt. % of (b) a basic copper nitrate.  
     
     
         13 . The composition as claimed in  claim 7 , which comprises (a) melamine or trihydrozinotriazine, (b) a basic copper nitrate and (c) sodium carboxymethylcellulose or guar gum.  
     
     
         14 . The composition as claimed in  claim 13 , which comprises 15 to 25 wt. % of (a) melamine, 60 to 80 wt. % of (b) a basic copper nitrate and 0.1 to 10 wt. % of (c) sodium carboxymethylcellulose or guar gum.  
     
     
         15 . The composition as claimed in  claim 13 , which comprises 15 to 25 wt. % of (a) trihydrazinotriazine, 60 to 80 wt. % of (b) a basic copper nitrate and 0.1 to 10 wt. % of (c) sodium carboxymethylcellulose or guar gum.  
     
     
         16 . The composition as claimed in  claim 10 , which comprises 15 to 25 wt. % of (a) melamine, 60 to 80 wt. % of (b) a basic copper nitrate, 0.1 to 10 wt. % of (c) sodium carboxymethylcellulose and 1 to 15 wt. % of (d) aluminum hydroxide or 1 to 10 wt. % of (d) cobalt oxide.  
     
     
         17 . The composition as claimed in  claim 10 , which comprises 10 to 25 wt. % of (a) trihydrazinotriazine, 60 to 80 wt. % of (b) a basic copper nitrate, 0.1 to 10 wt. % of (c) sodium carboxymethylcellulose and 1 to 15 wt. % of (d) aluminum hydroxide or 1 to 10 wt. % of (d) cobalt oxide.  
     
     
         18 . A molded article of the gas generating composition being in the form of a single perforated cylinder or a perforated cylinder, obtained by extruding the gas generating composition as defined in any one of  claims 1  to  17 .  
     
     
         19 . A molded article of the gas generating composition being in the form of pellets, obtained by compress-molding the gas generating composition as defined in any one of  claims 1  to  17 .  
     
     
         20 . An inflator for air bag, using the gas generating composition as defined in any one of  claims 1  to  17  or a molded article thereof.